On Thu, Sep 27, 2012 at 2:23 AM, Gary Stainburn <gary.stainburn@xxxxxxxxxxxxxx> wrote: > Hi folks. > > I'm planning on extending a field in one of my main tables using: > > alter table stock alter column type varchar(255); Why not just do alter table stock alter column type text; That is, do you really need a limit? The VARCHAR type in Postgress is just a TEXT type with an additional test to limit data to 255 characters. It doesn't save space to limit the length. > to extend it from the current varchar(80). My concern is that this table and > this field is used in a number of views, and views of views. > > Are then any gotchas that I need to worry about or things I need to check, or > will it just work? You can't alter a table that has dependent views. => alter table foo alter t type varchar(255); ERROR: cannot alter type of a column used by a view or rule DETAIL: rule _RETURN on view fooview depends on column "t" I keep scripts around to rebuild all of my views when necessary. If I keep the scripts up to date, it make me much more willing to make a schema change instead of putting it off until things are really messy. Craig -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
